DNA gyrase, B subunit; A type II topoisomerase that negatively supercoils closed circular double-stranded (ds) DNA in an ATP-dependent manner to modulate DNA topology and maintain chromosomes in an underwound state. Negative supercoiling favors strand separation, and DNA replication, transcription, recombination and repair, all of which involve strand separation. Also able to catalyze the interconversion of other topological isomers of dsDNA rings, including catenanes and knotted rings. Type II topoisomerases break and join 2 DNA strands simultaneously in an ATP-dependent manner.

Deacetylase, histone deacetylase/acetoin utilization protein; PFAM: Histone deacetylase domain.

Topoisomerase IA; Releases the supercoiling and torsional tension of DNA, which is introduced during the DNA replication and transcription, by transiently cleaving and rejoining one strand of the DNA duplex. Introduces a single-strand break via transesterification at a target site in duplex DNA. The scissile phosphodiester is attacked by the catalytic tyrosine of the enzyme, resulting in the formation of a DNA- (5'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 3'-OH DNA strand. The free DNA strand then undergoes passage around the unbroken strand, thus removing DNA superco [...]

Hypothetical protein; Manually curated.

PFAM: Helicase conserved C-terminal domain; DEAD/DEAH box helicase.

Ammonia permease; PFAM: Ammonium Transporter Family; Nitrogen regulatory protein P-II; TIGRFAM: ammonium transporter; Belongs to the P(II) protein family.

Signal recognition particle GTPase; Involved in targeting and insertion of nascent membrane proteins into the cytoplasmic membrane. Binds to the hydrophobic signal sequence of the ribosome-nascent chain (RNC) as it emerges from the ribosomes. The SRP-RNC complex is then targeted to the cytoplasmic membrane where it interacts with the SRP receptor FtsY. Belongs to the GTP-binding SRP family. SRP54 subfamily.

DNA helicase, Rad3; PFAM: DEAD_2; manually curated.

ATPase involved in DNA repair; Part of the Rad50/Mre11 complex, which is involved in the early steps of DNA double-strand break (DSB) repair. Rad50 controls the balance between DNA end bridging and DNA resection via ATP-dependent structural rearrangements of the Rad50/Mre11 complex. Belongs to the SMC family. RAD50 subfamily.